TODAY DEC10
TEMPERATURE39
HUMIDITY99
PRESSURE
WIND COND.136 2
  • 4639Tue100%90%
  • 4440Wed80%90%
  • 4441Thu80%
  • 4633Fri
  • 4338Sat
daynightWeather update from SEDRO WOOLLEY at

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Hamilton Average Temperature

In the event that the weather data was unavailable for this city, estimates based upon nearby cities were used.
MonthTemp. (min)Temp. (max)Temp. (avg)Precipitation
January35°F45°F40°F1.2"
February37°F48°F41°F2.3"
March40°F51°F45°F2.5"
April42°F56°F48°F0.6"
May46°F61°F53°F1.2"
June50°F66°F57°F0.9"
July52°F71°F60°F0.0"
August52°F71°F61°F0.0"
September50°F66°F57°F0.5"
October45°F57°F51°F2.9"
November40°F50°F44°F2.4"
December35°F44°F39°F1.4"

Did you know?

  • The highest monthly average temperature in Hamilton for August is 61 degrees.
  • The lowest monthly average temperature in Hamilton for December is 39 degrees.
  • The most monthly precipitation in Hamilton occurs in October with 2.9 inches.
  • The air quality index in Hamilton is 37% better than the national average.
  • The pollution index in Hamilton is 211% worse than the national average.

Real Estate Listings In Hamilton

Compare Hamilton, WA Weather To Other Cities

Hamilton air quality index & pollution index

In the event that the air quality/pollution data was unavailable for this city, estimates based upon nearby cities were used.
IndexHamiltonWashingtonNational
Air quality index313650
Pollution index15,778,9008,596,9895,066,862

Hamilton air quality information

MeasurementTotal
Days measured365
Days with good air quality344
Days with moderate air quality21
Days w/ poor A.Q. for sensitive groups
Days with unhealthy air quality

Hamilton air quality information

PollutantTotal
Arsenic0.010%
Benzene0.270%
Carbon Tetrachloride0.040%
Lead0.160%
Mercury0.003%

Average monthly Hamilton temperature with heat index

Hamilton monthly precipitation with daily maximum

Hamilton monthly snow depth with daily maximum

Hamilton monthly wind speed information

Nearby cities with good air quality

City, StatePopulationAir Quality IndexNational Avg.
Acme, WA1622746%
Lake McMurray, WA1203138%
Big Lake, WA1,9043138%
Lyman, WA5553138%
Concrete, WA7443138%
Hamilton, WA1973138%

Cities with similar population

City, StatePopulationAir Quality IndexNational Avg.
Mud Bay, AK1971962%
Woodland, AL1973824%
Moore, MT1972648%
Chest Springs, PA1974510%
Organ, NM197512%
Hamilton, WA1973138%
Source: The Hamilton, WA weather data displayed above is derived from the NOAA (National Oceanic and Atmospheric). Air quality and pollution data is derived from the EPA (United States Environmental Protection Agency). Air quality and pollution levels measured in a particular area may not be representative of the entire county.